Spinning machine



SPINNING MACHINE Sheets-s 1 Filed April 25, 1952 NINVENTOR: Alberz 3. 060d [lam ATTORNEYS.

Sept. 8, 1953 A. a. CAVALLIARO ,5

SPINNING MACHINE Filed April 25, 1952 2 Sheets-Sheet 2 INVENTOR: AZ [76]? 5. Camila r0 A TTORNE YS.

Patented Sept. 8, i953 UNITED 2,651,165

SPINNING MACHINE Albert I .BcQavaHmr .Bristoh R. -I. ,-.-assigncr1tc Collins daAik-man Corporation, il hiladclphia. .la, enumeration of Delaware :nppllcatlonjprlf u, 1952, sesame. cases: K'OlaimaJCl. sir-e101) This invention irelates to; sn nn'ingv machines such as are employedin thetextileindustry in the pwductionpframsfrom r vi Strands of cotton, silk, synthetic fibers of various kinds, or mixtures of such'nbers.

In the operation of such machines, upon the breaking of a roving strand, the broken end frequently becomes entangled with an adjacent running strand. If not instantly detected, a considerable length of the broken end is doubled with and wound with an adjacent normally running twisted thread onto the collecting bobbin for the latter. When this happens, very considerable time is lost in making the necessary correction since, before the broken end can be re-joined, the doubled yarn must be removed from the bobbin and disposed of as waste.

The chief aim of my invention is to overcome the above difficulties, that is to say, to obviate contingencies of the kind referred to. This objective is realized in practice as hereinafter more fully set forth, through provision of a simple and reliable means whereby, upon breakage of a roving strand, the broken end is immediately ruptured upon becoming entangled with an adjacent strand, and the broken end collected on one of the corresponding pairs of nip rolls by which such strand is normally delivered to the bobbin which is to receive it.

Other objects and attendant advantages will appear from the following detailed description of the attached drawings wherein:

Fig. l is a fragmentary perspective view of a spinning frame conveniently embodying my invention.

Figs. 2-5 are views similar to Fig. 1 showing how a broken roving strand is caught and ruptured upon becoming entangled with a neighboring strand.

Fig. 6 is a fragmentary view in section taken as indicated by the angled arrows VIVI in Fig. 1 and drawn to a larger scale.

The spinning frame, insofar as herein shown is, generally speaking, of well known construction in that it comprises a creel rail III with upstanding pins l l on which are impaled the supply spools 12 of the roving strands S to be spun. Forward of the creel rail I is a set of draw rolls l3 by which the strands S are attenuated as they pass to corresponding pairs of nip delivery rolls l5 and I6 respectively secured to shafts I1 and l 8. The upper nip rolls l 5 may have a covering of felt or the like, as conventionally indicated in the drawings. Enroute from the rolls l5 and IE to the collecting bobbins 1-9, the individual strands S. are directedindicate; are driven-from: a power shaft. .(not

shown) by belts 23. The twisting or spinning operation is accomplished with the aid of hollow conical bobbin shrouding caps 24 which are supported at the top of upright pins 25 anchored in another fixed rail (not shown) of the machine after the manner described in U. S. Patent No. 2,061,498 granted to Whitworth F. Bird on November 17, 1936. The spools I2, the draft rolls l3, the delivery rolls l5 and Hi, the guide eyes l9 and the bobbins l8 are all constructed and positioned in a manner well known in the art.

The means provided in accordance with my invention to prevent double spinning comprises swinging strand rupturing elements 26 (Fig. 6) whereof one is associated with each of the upper delivery rolls l5. As herein exemplified, each swinging element 26 is in the form of a finger fashioned from wire and pivotally hung from a lateral stud 21 on a lug 28 which is secured, by a screw 29, to one side of the corresponding nip roll l5 adjacent the periphery of the latter. At its distal end, each element 26 is provided with a self threading pig tail eye 26a. and, as best seen in Fig. 2, the length of each such element is somewhat in excess of the radius of the roll with which it is associated.

Operation During rotation of the delivery rolls IS in the direction of the arrows thereon, the elements 26 will swing about their respective pivots 21 and take the successive positions in which they are shown in Figs. 1-5, The elements 25 are controlled against excessive swinging by reason of engagement first with the shaft I! of the upper delivery rolls l5 as in Fig. 2, and later in the same rotation, by engagement with the shaft I8 of the lower delivery rolls I6 as shown in Fig. 4, being thereafter freed to hang as in Fig. 5 during the completion of the rotation.

In the event that a strand S breaks and the broken end E becomes entangled, as at P in Fig. 1, with an adjacent running strand S, the entangled strand will be engaged in the pig tail eye 26a of the corresponding element 26 during rotation of the delivery roll l5 by which it is advanced. As the roll l5 continues in its rotation, the element 26 ultimately falls upon the roll shaft I1 and is thereby momentarily restrained. The end E of the strand S between 3 the point P of its entanglement with the adjacent running strand S and the nip of rolls l5, i6 is forcibly strained, and eventually is ruptured as in Fig. 2. As the roll 15 completes its rotation as in Figs. 2-5, the end E of strand S reeves out of the eye 26a of element 26 and wraps about said. roll, leaving only a small negligible length of the broken end to be carried along at P by the adjacent running strand S to which it has become attached. The accumulation of the strand end E on roll I is readily seen by the machine attendant, who will then stop the machine and splice the end E with the trailing broken end E.

After the splicing, which takes but a moment in its accomplishment, the machine is restarted for the continuation of normal spinning as before.

Having thus described my invention, I claim:

1. In a spinning machine, laterally-spaced pairs of cooperative upper and lower nip rolls for delivering individual roving strands, a series of spaced guides disposed at a distance beyond the nip rolls for directing the strands enroute to separate rotating collecting bobbins; means carried on one side of the upper nip roll of each of said pairs and operative, in the event of break- '4 ing of the strand corresponding to one such pair and entanglement thereof with the running strand next adjacent the aforesaid side of the upper roll of such pair, to engage and rupture the entangled end of the broken strand in the interval between the nip of said pair of rolls and the point of its entanglement with the neighboring running strand.

2. The invention, according to claim 1, wherein each rupturing means has the form of a finger which is freely pivoted on a lateral, eccentricallydisposed stud on one side of the nip roll and which is provided at its distal end with a selfthreading eye for catching and rupturing the broken strand.

3. The invention according to claim 2, wherein of the nip roll with which it is associated and L constrained during each rotation of the delivery No references cited. 

